modelnoiseGen

Noise generator

Extends from Interfaces.RealNinOperation (Real comparison interface).

Information

Description

Model of a noisy signal.

The output ( y ) is the result of an algorithm that produces a sequence of pseudo random values.
The properties of the signal can be modified through the algorithm parameters: amp and X_start.
The output is filtered through a first order low pass filter, with time constant Ts

Fixed Point not available in this model

Parameters

Type	Name	Default	Description
Modelica.Units.SI.Time	Ts (from RealNinOperation)	0.1	sampling time
Integer	nInput (from RealNinOperation)	1	number of inputs
Boolean	useInputs (from RealNinOperation)	true	=true, if inputs are enabled
Fixed Point
Boolean	FixedPoint (from RealNinOperation)	false	Use fixed point real numbers
Integer	Nbit (from RealNinOperation)	16	Number of bits for representing the real numbers
Real	scaleFactor (from RealNinOperation)	1	Scale factor for Fixed Point numbers
Integer	MAX (from RealNinOperation)	integer(2^(Nbit - 1))	maximum number that can be represented with Fixed Point notation
Integer	MIN (from RealNinOperation)	-integer(2^(Nbit - 1)) + 1	minimum number that can be represented with Fixed Point notation
Noise generator
Real	amp	0.01	Amplitude
Real	Tf	1	First order filter time constant
Real	X_start	1	Initial value
Algorithm
Real	m	2^31 - 1	coefficient
Real	a	7^5	coefficient
Real	c	10	coefficient

Connectors

Type	Name	Default	Description
Modelica.Blocks.Interfaces.RealInput[nInput]	u (from RealNinOperation)		input vector
Modelica.Blocks.Interfaces.RealOutput	y (from RealNinOperation)		output

Components

Type	Name	Default	Description
Integer[nInput]	Ufp (from RealNinOperation)		floating point converted input
Integer	Yfp (from RealNinOperation)		floating point converted output

Revisions

Industrial Control Systems (v 1.0.0) : April-May 2012